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UNITED STATES PATENT OFFICE.

EDWARD M. LOWDEN, OF NEW YORK, N. Y.

LAMP.

SPECIFICATION formingpart of Letters Patent No. 230,299, dated July 20, 1880.

Application filed August 6, 1879.

To all whom it may concern:

Be it known that I, EDWARD M. LOWDEN, of the city, county, and State of New York, have. invented an Improvement in Lamps, of which the following is a.- specification.

My invention relates to an improvement in lamps, the object being to provide a lamp either for lighting or heating and cooking purposes which shall be of such construction and relative arrangement of parts that air will be freely supplied to the burner when the lamp is in operation, and in the event that explosive gases are generated within the oil-receptacle a free escape is provided for the escape of any such gases, thus preventing the explosion of the lamp.

To these ends my invention consistsin a lamp embodying certain novel and peculiar features 'of construction, as will hereinafter be explained, and pointed out in the claim.

In the accompanying drawings, Figure 1 is a View, partly in vertical section and partly in side elevation, of a lamp embodying myinvention.

A represents the oil-reservoir and receptacle for the. lmrner-wick. B is a shell or cylinder surrounding the reservoir A, the shell being of greater diameter than the oil-reservoir, and thereby forming an intervening annularspace, a. The upper ends of the shell or cylinder B and oil-reservoir A are united by an annular cap, 0 while the upper end of the oil-reservoir is closed by a cap, 0, which is provided with a depending flange, d, screw-threaded on its outer surface, said screw-threads engaging in corresponding screw-threads formed on the inner side of the upper end of the oil-reservoir.

The upper end ot'the oil-reservoir is provided with openings D D, of any desired form, size, and number, the same being located above the level of the oil in reservoir A. r

The cylinder or shell B is of greater length than the oil-reservoir, and extends below the latter, the lower end thereof being provided with a drip-cup, E, which is furnished with a tube, F, and a stopper, F, for closing the tube.

In the lower end of the cylinder or shell 13 are formed openings D D, through which air may enter and flow through the annular space a to the upper portion of the reservoir, and then flow through the openings D D, and thus supply the required amount of air to support combustion. Should explosive gases be generated in the oil-reservoir A all danger of explosion is obviated by my improved construction and arrangement of parts, as such explosive gases would escape through openings D D, flow down through the annular passage (1, and escape to the outer air through the openings D D, formed in the lower portion of the shell or cylinder B. Should any such gases or vapors condense on the interior surface of the outer shell thedrip will flow into the dripcup E, and be retained therein until drawn off through the tube F, which operation may be readily effected by removing the stopper F.

To the lower portion of the oil-rservoir-A is secured one end of an oil-supply tube or pipe, H, which extends through the outer shell or cylinder B, the opposite end of the tube being secured to the main oil reservoir or fount G. The fount G is provided with a filling-aperture. K, having a vent-hole, it, formed therein.

L is an indicator connected with t-hetop of fount G, and serves to indicate the height of oil in the fount. Brackets M N are secured to the pipe or tube H,fonnt G, and shell or cylinder B, serving to strengthen the parts.

It will be observed thatthe air openings and passages are so arranged that the air is obliged to flow around the periphery of the oil-reservoir on its passage to the burner, and thus tends to prevent the heating of the oil; but should the oil become heated from any cause, and thereby cause the generation of explosive gases, a free escape for the gases is provided, the outlet being at a safe distance from the burner.

'Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a lamp, the combination, with an oil-res ervoir and wick-receptacle having perforations formed in its upper end, of an outer shell or cylinder perforated at its lower end, and a drip-cup secured to the lower end thereof, substantially as set forth.

EDWARD M. LOWDEN.

Witnesses:

' CHRISTOPHER 'STANGE,

, ALFRED DYER. 

